The bat is designed more for harder balls (like the Ultra) and it is the most durable bat I've ever owned. The Synergy Flex is legal in most Senior leagues and leagues that merely require the ASA stamp (which this has).
I have also applied a new Supreme Gamma grip, for a great feel of the bat. While it is end-loaded, it does not have that extreme load where you have to hit it in the perfect spot; in fact, with the 13.5" extended barrel the sweet spot is a good 1.5"-2 longer than most composite bats. Read about this bat, if you are not familiar with it... The reviews are consistent that this bat has insane power. This item is in the category "Sporting Goods\Team Sports\Baseball & Softball\Bats\Softball-Slowpitch".The seller is "jonsf" and is located in this country: US. This item can be shipped to United States, all countries in continental Asia.